i5 3750k wont clock beyond 4.7Ghz

[dmferrett]

I have got to 4.7Ghz on my ivy i5 and cannot get the overclock any higher. I currently run 1.51V vcore and reach a max temp of 81oC after playing BF4 for hours.

But if I change the BClk by 1% to 101% to increase my clock it just BSOD's. I have tried the multiplier to 48 but it loads windows and works ok but when i load BF4 it either BSOD's or freezes.

My Ram voltage is 1.7V and is 2000Mhz cas 9.

I'm thinking that the 4.7Ghz is an artificial limit because I've had the cpu as hot as 102oC when my case ventilation was poor. (I have around 20oC of thermal headroom before throttling kicks in)

I use an MSI GD65 board.

I'm pretty stuck and could really use some expert help getting above 4.7Ghz.

 

[dmferrett]

Dial down your Volts 1.51 is very high for Ivy no matter what headroom you think you have!!!!

1.4 is considered safe 24/7 Vcore on such a chip.

OK I'll give it a go. If its not stable at 1.4V what should I do as this particular chip seems to love volts. Is there anything else you can think of?

 

[dmferrett]

I don't. Think you need it oc'ed that high if it needs that much voltage just to play bf4.

It doesn't need to be overclocked high just to play BF4. The need to overclock comes from the necessity to remove a potential bottleneck when using 2xgpu's. BF4 is very cpu intensive (70-75% cpu usage for a single gpu and 95-99% with 2xgpus when at 4.5Ghz) more so with 2 gpu's hitting very high fps's. The 4.7Ghz overclock is stable and a bottleneck is overted. But would like the knowledge to extend the overclock higher still if at all possible.